Media Blitz - Achievement

This one is tough but after some experimenting I managed to get it. Okay, as soon as the mission starts you have the chance to take out one of the three bases during the surprise attack. This is the most important part of the mission as your choice will greatly impact the difficulty of it. As you may have noticed, each base focuses on a specific unit type. The base on the left has air power, the base on the right side of the map has light armor and infantry, and the largest base on the opposite side of yours has heavy armor.

During the surprise attack phase (lasts four minutes), you have to take out the base that produces the heavy armor. Do it quickly using the Odin's artillery ability (you don't have to wipe the entire base out, just take out the production buildings) and then you should have enough time left to destroy some more buildings. Go to the light armor base (righthand side of the map) and take out as much as you can from that base.

When the mission starts and you get control of your base, quickly repair the Odin and build at least three barracks. At this point, your base only needs heavy air defenses since only the airport base remains intact. Use the Odin and the thor that you get to take out what's left of the light armor base, but don't take out the news towers yet (they will hit you hard once you do, with off map reinforcements).

After you're done with that, focus on taking out the air base. Build a couple of thors to support the Odin, but not too many since they're expensive and you need the resources to build a strike force. Now here's the tricky part: The only way you're going to finish the mission in less than 20 minutes is if you hit two of the towers at the same time. By now you should have a large infantry force (if you completed some of the artifact missions before and have the siege tank, it's even easier but I did it without). Use the Odin and a couple of thors to hit the base to the north, and use a reasonably large force to hit the base to the west (air base).

Once those towers are done, use what's left from the strike forces to hit the last base. Make sure you bring some air defenses as they will use battle cruisers for this one. You can also build some air defense towers if you have the resources and time—this helped me a lot. Do this and you should complete the mission in about 17-19 minutes. Good luck!